It took place during Labor Day weekend on Saturday, August 31, 2019, at the Sears Centre Arena in the Chicago suburb of Hoffman Estates, Illinois.

The event is considered the spiritual sequel to the independently produced All In PPV held in September 2018 at the same venue, which was the catalyst to the formation of AEW in January 2019.

In the main event, Chris Jericho defeated Adam Page to become the inaugural AEW World Champion.

During the American professional wrestling promotion All Elite Wrestling's (AEW) inaugural pay-per-view (PPV) event, Double or Nothing, in May 2019, it was announced that All Out was scheduled as a spiritual sequel to the independently produced All In PPV and would be held during Labor Day weekend on Saturday, August 31, 2019, the day before the first anniversary of All In.

[7] On August 12, it was announced that the event would be available for purchase in the United Kingdom on ITV Box Office and the one-hour "Buy In" pre-show would air live on ITV4.

[12] All Out comprised 10 professional wrestling matches, including two on the pre-show, which involved different wrestlers from pre-existing scripted feuds and storylines.

[14] In the lead up to Double or Nothing on AEW's YouTube channel, it was revealed that the winner of the Casino Battle Royale, held during the event's Buy In pre-show, would face the winner of Double or Nothing's main event at a future date to determine the inaugural AEW World Champion.

[15] The battle royal was won by Adam Page,[16] while Chris Jericho defeated Kenny Omega in the main event, setting up the inaugural championship match,[17] which was scheduled for All Out.

[20] At the conclusion of Double or Nothing, Jon Moxley appeared from the crowd, confirming he had signed with AEW, and attacked both Chris Jericho and Kenny Omega.

[23][24] During the Fyter Fest pre-show, Best Friends (Chuck Taylor and Trent Beretta) defeated SoCal Uncensored (represented by Frankie Kazarian and Scorpio Sky) and Private Party (Isiah Kassidy and Marq Quen) in a three-way tag team match,[22] while at Fight for the Fallen, The Dark Order (Evil Uno and Stu Grayson) made their AEW in-ring debut and defeated Angélico and Jack Evans and Jungle Boy and Luchasaurus, also in a three-way tag team match.

[20] With their respective wins, Best Friends and The Dark Order advanced to All Out for an opportunity at a first-round bye in the AEW World Tag Team Championship tournament.

Nyla Rose, Britt Baker, Allie, Brandi Rhodes, Teal Piper, Ivelisse, and Jazz were confirmed for the 21-woman battle royal.

[36] The actual pay-per-view opened with SoCal Uncensored (Christopher Daniels, Frankie Kazarian, and Scorpio Sky) facing Jurassic Express (Jungle Boy, Luchasaurus, and Marko Stunt).

Early in the match, Janela and Allin duct-taped Havoc to a chair, put thumbtacks in his mouth and taped it shut.

[36] Later, The Dark Order (Evil Uno and Stu Grayson) faced Best Friends (Chuck Taylor and Trent Beretta) for a first round bye in the AEW World Tag Team Championship tournament.

In the end, Pentagon and Fenix performed a Fear Factor/Springboard Double Foot Stomp combination on a bridged ladder on Matt and then retrieved the belts to retain the title.

After the match, Santana and Ortiz appeared (formerly part of The Latin American Xchange in Impact Wrestling), making their AEW debut, and attacked the Lucha Brothers and Nick Jackson.

[36] In the main event, Chris Jericho faced Adam Page for the inaugural AEW World Championship.

Dave Meltzer of the Wrestling Observer Newsletter reviewed All Out as "great": the "atmosphere was tremendous", and there was "the feeling of history" about this show, which outstripped All In and Double or Nothing.

According to Meltzer, AEW was "loaded with talent" (including underrated ones such as Jack Evans and Scorpio Sky) and the "action and layout in every match was strong".

Additionally, Meltzer noted that Luchasaurus was particularly popular among the live audience for his acrobatics, which were discouraged by his previous company WWE.

The Casino Battle Royale successfully featured every woman in the match, while Sulla-Heffinger felt that Riho's performances render her as "arguably the best" wrestler AEW has.

[37] Justin Barasso of Sports Illustrated wrote that with All Out, "AEW accomplished its mission to provide an engaging alternative" to WWE.

Barasso felt that Jericho being chosen as the AEW champion garners "interest and anticipation for the TNT debut on October 2 in ways that Page simply cannot".

[39] Two days after the event, it was reported by the Tallahassee Police Department that the AEW World Championship belt was legitimately stolen from Chris Jericho's limousine while he was eating dinner at a LongHorn Steakhouse.

[41] On Wednesday, however, Tallahassee Police confirmed they had recovered the championship belt, posting a picture on Facebook of one of their officers holding the title.